---
product_id: 282243742
title: "4 Channel Amplifier Car Audio 4 x 125 Watts 2 Ohm, TPT-500.4 2 Ohm Small Mini Stereo Amp 12 Volts Full Range Class D - Bridgeable Car Amplifier"
brand: "timpano"
price: "$140.60"
currency: USD
in_stock: true
reviews_count: 13
category: "Timpano"
url: https://www.desertcart.us/products/282243742-4-channel-amplifier-car-audio-4-x-125-watts-2
store_origin: US
region: United States of America
---

# 87% efficiency power 4x125W RMS @ 2Ω 2-way protection system 4 Channel Amplifier Car Audio 4 x 125 Watts 2 Ohm, TPT-500.4 2 Ohm Small Mini Stereo Amp 12 Volts Full Range Class D - Bridgeable Car Amplifier

**Brand:** timpano
**Price:** $140.60
**Availability:** ✅ In Stock

## Summary

> 🎶 Small Amp, Big Vibes: Power Your Drive with Precision and Style

## Quick Answers

- **What is this?** 4 Channel Amplifier Car Audio 4 x 125 Watts 2 Ohm, TPT-500.4 2 Ohm Small Mini Stereo Amp 12 Volts Full Range Class D - Bridgeable Car Amplifier by timpano
- **How much does it cost?** $140.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/282243742-4-channel-amplifier-car-audio-4-x-125-watts-2)

## Best For

- timpano enthusiasts

## Why This Product

- Trusted timpano brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bridgeable Boost:** Double your power with bridge mode—2x225W RMS for next-level speaker performance.
- • **Smart Protection:** Built-in safeguards prevent overheating and short circuits, keeping your system safe and sound.
- • **Compact Powerhouse:** Mini heatsink with Brazilian Class D tech packs serious punch in a tiny frame.
- • **Space-Savvy Design:** Sleek 4x5 inch footprint fits effortlessly behind your dash without compromising audio clarity.
- • **Dynamic 500W Output:** Four channels delivering crisp, distortion-free sound at 125W each for full car audio immersion.

## Overview

The Timpano TPT-500.4 is a compact 4-channel Class D car amplifier delivering 500 Watts total power (4x125W at 2 Ohms) with an impressive 87% efficiency. Its mini heatsink design incorporates advanced Brazilian Class D technology and a high-speed MOSFET power supply, ensuring powerful, distortion-free sound in a small footprint. Bridgeable channels allow doubling output to 2x225W RMS, while a smart 2-way protection system guards against overheating and speaker shorts. Perfect for millennial professionals seeking high-performance audio in tight spaces without sacrificing style or reliability.

## Description

Product description Timpano Compact 4 Channel TPT500.4 Car Audio Amplifier – 4x 125 Watts at 2 Ohms – Mini Stereo 12 volts Full Range Class D Amp Bridgeable Small Footprint Technology! Timpano amplifiers raise power amplification to a new standard of quality and usability. The new line delivers the most innovative and powerful Brazilian technology in compact full range amplifiers on the market. Loaded with features, it provides an unsurpassed efficiency rate of 80-90% in a compact Class D full range amplifier. COMPACT DESIGN: Digital class D Brazilian technology allows this amplifier to have a small footprint by integrating a high-speed mosfet power supply with top of line transistors to ensure performance in a small heat sink without compromising performance. Dimensions: 3.93″ depth x 5.02″ width x 2″ height POWER: This amplifier is designed to run your stereo system with the power it needs to perform! 500 Watts maximum dynamic RMS power output of 4x 125 Watts at 2 Ohms per channel. Its high efficiency rate of 87% provides more power with less battery consumption. BRIDGEABLE: Double the power output to your speakers by bridging two channels. The minimum impedance of 4 Ohms per bridged channel at an output power of 2 x 225 Watts RMS TECHNOLOGY: A smart electronic 2-way protection circuit protects the amp if it gets too hot or if speakers fail to cause a short! Focusing in sound quality, a full range response of 10 to 24,000Hz was used to give the best sound reproduction on this tiny amplifier. FEATURES: Heavy Duty 10 Gauge power and speaker wire Inputs. Built-in crossover filters for easy tuning! Choose between a fixed HPF at 90Hz or LPF at 90Hz + 45Hz Bass Boost or just turn it FLAT and use your external crossover or DSP settings. It also includes Variable Gain Control. Level controls are not for adjusting volume. They adjust the amount of signal that is coming into the amplifier from your signal source. Before Installing You must follow the instructions for the product’s installation and connections to assure optimal performance. If you have any questions, get in touch with us. Before using the amplifier, always follow these guidelines • Make sure the amplifier is switched off before adding or removing any connections. This prevents possible damage to the equipment connected to the amplifier; • Keep all cables as far away as possible from the ignition cables, electronic injection modules, and starter switch since they may cause noise interference; • Always use 100% Copper cables and good quality connectors. This assures the sound’s quality and fidelity; • To avoid damaging the cables, make sure that they do not touch sharp metal edges. Important: Use a fuse 12 inches away from the battery as a safety precaution The power-rated data are based on equipment from the PRV Audio Group laboratory. Frequency reference of 1Khz with THD+N to ≤10% in impedances referring to the indicated in each measurement. The electronic components and the manufacturing process can present manufacturing variations, thus leading to a variation in the measurements made. This amplifier is designed to perform on music applications ( with speakers ), any load test ( resistant load ) is not recommended. Timpano TPT500.4 Compact 4 Channel Car Audio Amplifier

Review: Tiny cool lil hog THE FIRST TIME - I really like how small it its. Crossover options are very limited, but for the size its nice that there is a LPF and HPF on all channels, even if they are both fixed at 90hz. Powers my Rockford Fosgate 6.5" component set, and both of my Earthquake SWS 6.5 woofs in the doors. Clear, minimal distortion. The best part is the size though, it's smaller then a thick sandwich on wonder bread. 3"W x 5"L x 2"H. I'll be buying another one to replace a larger, less powerful amp very soon. EDIT: Bought another amp 4/1/24. I decided to run each of my 100w subs on each channel of this new amp, bridged for absolute minimal distortion and obviously maximum output. And....rear channel is dead. No working. Ok, so checked all my connections, swapped the wire, not a peep. I went to maybe switch them around again and I noticed that when you hold the RCAs against the amp it would complete the connection and sound would cut in. Let go, cuts out. Its like when you had a bad headphone jack and had to hold it into the plug. Well I cant do that, when the amps under the backseat in my truck. Returning, hopefully the next one that comes is perfect like the first. Now I gotta dig up the box and packaging, at least the recycling didnt come this week. I had mega faith that the second amp would be fine but no dice. Fingers crossed. Will update. UPDATE #2: Replacement amp works well, all channels. Just like the first. Had to have it because the size is just perfect to fit in the space off the back wall under the back seat in my extended cab 2500. Both amps, equalizer, and all wiring fits nicely. Would buy again. Test as soon as you receive it.
Review: Amazing Amps for the price - Insanely good little mini amps, Very clean sounding - some speakers may have audible hiss if gain is up too high if they are very sensitive but if you are feeding strong voltage over RCAs turning gain down easily tames it. These can get a bit warm if you push them too hard but testing at high volumes for hours on my setup only left them slightly warm to the touch so I don't think they are as bad as other mini Class D amps and if you have heat issues you are probably doing something wrong.

## Features

- COMPACT DESIGN - MINI HEATSINK: Featuring advanced Brazilian Class D technology, this amplifier integrates a high-speed MOSFET power supply with premium transistors, delivering top-tier performance in a small heat sink without sacrificing efficiency or power.
- STEREO POWER: Engineered to deliver 500 Watts of dynamic RMS power, this small 4 channel amplifier 4x125 Watts at 2 Ohms per channel. With an impressive 87% efficiency rate, it provides maximum power while minimizing battery consumption.
- BRIDGEABLE AMP: Boost your speaker performance by bridging two channels, delivering double the power. With a minimum impedance of 4 Ohms per bridged channel, enjoy an output of 2 x 225 Watts RMS for enhanced sound quality.
- BUILT-IN PROTECTION SYSTEM: Equipped with a smart 2-way protection circuit, this amplifier safeguards against overheating and speaker short circuits. With a full-range frequency response from 10 to 24,000Hz, it delivers exceptional sound quality.
- MINI AMPLIFIER CAR AUDIO: This compact 4 channel amplifier car audio packs powerful performance into a small design while maintaining exceptional sound quality. Perfect for tight spaces, it ensures high efficiency without sacrificing audio clarity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08NTSY3D4 |
| Best Sellers Rank | #7,083 in Electronics ( See Top 100 in Electronics ) #11 in Car Multichannel Amplifiers |
| Brand Name | Timpano |
| Customer Reviews | 4.4 out of 5 stars 524 Reviews |
| Included Components | Amplifier |
| Item Dimensions | 3.93 x 5.02 x 2 inches |
| Item Weight | 1.1 Pounds |
| Item dimensions L x W x H | 3.93 x 5.02 x 2 inches |
| Manufacturer | Timpano |
| Material Type | metal or plastic |
| Maximum Output Power | 125 Watts x 4 |
| Maximum Supply Voltage | 15 Volts (DC) |
| Minimum Supply Voltage | 10 Volts (DC) |
| Model | TPT-500.4 |
| Mounting Type | Freestanding |
| Number of Channels | 4 |
| Output Power | 500 Watts |
| Package Type Name | Open Box |
| Part Number | TPT-500.4 2 Ohm |
| Specification Met | FCC |
| Supply Current | 8.5 Amps |
| UPC | 611056239438 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Warranty Description | 1 Year Manufacturer limited warranty |

## Product Details

- **Item dimensions L x W x H:** 3.93 x 5.02 x 2 inches
- **Manufacturer:** Timpano
- **Maximum Supply Voltage:** 15 Volts (DC)
- **Minimum Supply Voltage:** 10 Volts (DC)
- **Voltage:** 12 Volts

## Images

![4 Channel Amplifier Car Audio 4 x 125 Watts 2 Ohm, TPT-500.4 2 Ohm Small Mini Stereo Amp 12 Volts Full Range Class D - Bridgeable Car Amplifier - Image 1](https://m.media-amazon.com/images/I/51XeCr5TQbL.jpg)
![4 Channel Amplifier Car Audio 4 x 125 Watts 2 Ohm, TPT-500.4 2 Ohm Small Mini Stereo Amp 12 Volts Full Range Class D - Bridgeable Car Amplifier - Image 2](https://m.media-amazon.com/images/I/61qoLG7QzeL.jpg)
![4 Channel Amplifier Car Audio 4 x 125 Watts 2 Ohm, TPT-500.4 2 Ohm Small Mini Stereo Amp 12 Volts Full Range Class D - Bridgeable Car Amplifier - Image 3](https://m.media-amazon.com/images/I/61MjJftGtLL.jpg)
![4 Channel Amplifier Car Audio 4 x 125 Watts 2 Ohm, TPT-500.4 2 Ohm Small Mini Stereo Amp 12 Volts Full Range Class D - Bridgeable Car Amplifier - Image 4](https://m.media-amazon.com/images/I/61DeJgjCWdL.jpg)
![4 Channel Amplifier Car Audio 4 x 125 Watts 2 Ohm, TPT-500.4 2 Ohm Small Mini Stereo Amp 12 Volts Full Range Class D - Bridgeable Car Amplifier - Image 5](https://m.media-amazon.com/images/I/61JPDf2S8mL.jpg)

## Questions & Answers

**Q: Is there a Speaker terminal diagram never seen an amp with this style how do i run 4 speakers from it**
A: This amplifier has a common ground design - which allows it to be very compact! On the middle terminal you will have to hook up the speaker wires on the following way ( Negative from the left side and the positive from the right side Together ) The terminals are clearly marked with the printing on the side of the amplifier, please view pictures for output for more details.

**Q: If i wanted to use this as a 2 channel amp do i need all the inputs or do i split an rca into front right and back right?**
A: Yes, you will want to feed all four inputs, you can just split the RCAs.

**Q: Does this amp have a built in fan?**
A: No, this amplifier does not have an internal fan.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Tiny cool lil hog THE FIRST TIME
*by J***Y on February 9, 2024*

I really like how small it its. Crossover options are very limited, but for the size its nice that there is a LPF and HPF on all channels, even if they are both fixed at 90hz. Powers my Rockford Fosgate 6.5" component set, and both of my Earthquake SWS 6.5 woofs in the doors. Clear, minimal distortion. The best part is the size though, it's smaller then a thick sandwich on wonder bread. 3"W x 5"L x 2"H. I'll be buying another one to replace a larger, less powerful amp very soon. EDIT: Bought another amp 4/1/24. I decided to run each of my 100w subs on each channel of this new amp, bridged for absolute minimal distortion and obviously maximum output. And....rear channel is dead. No working. Ok, so checked all my connections, swapped the wire, not a peep. I went to maybe switch them around again and I noticed that when you hold the RCAs against the amp it would complete the connection and sound would cut in. Let go, cuts out. Its like when you had a bad headphone jack and had to hold it into the plug. Well I cant do that, when the amps under the backseat in my truck. Returning, hopefully the next one that comes is perfect like the first. Now I gotta dig up the box and packaging, at least the recycling didnt come this week. I had mega faith that the second amp would be fine but no dice. Fingers crossed. Will update. UPDATE #2: Replacement amp works well, all channels. Just like the first. Had to have it because the size is just perfect to fit in the space off the back wall under the back seat in my extended cab 2500. Both amps, equalizer, and all wiring fits nicely. Would buy again. Test as soon as you receive it.

### ⭐⭐⭐⭐⭐ Amazing Amps for the price
*by L***O on December 7, 2025*

Insanely good little mini amps, Very clean sounding - some speakers may have audible hiss if gain is up too high if they are very sensitive but if you are feeding strong voltage over RCAs turning gain down easily tames it. These can get a bit warm if you push them too hard but testing at high volumes for hours on my setup only left them slightly warm to the touch so I don't think they are as bad as other mini Class D amps and if you have heat issues you are probably doing something wrong.

### ⭐⭐⭐⭐⭐ Great for the price.
*by O***O on March 3, 2026*

This amp has power, works well for my motorcycle.

## Frequently Bought Together

- Timpano 4 Channel Amplifier - 4 x 125 Watts 2 Ohm, TPT500.4 Small 4 Channel Class D Mini Bridgeable Car Amplifier
- ROCKRIX 1ft RCA 1 Female to 2 Male Audio Speaker Y Adapter Splitter Cable (2 Pack)
- DteeDck RCA Splitter 1 Female to 2 Male, 2 Pack - RCA Audio Video Cable Splitter Adapter, Dark Blue

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-10*